Process of making a disinfectant.



ERNST LEONHARD'I, OF BARWINKEL, NEAR NEUHARDENBERG, GERMANY, ASSIGNOR TO GEBR. HEYL & C0. AKTIEN-GESELLSCHAFT, OF CHARLOTTENBURG, NEAR BERLIN, GERMANY.

PROCESS OF MAKING A DISINFECTANT.

N 0 Drawing.

To-all whom it may concern:

Be it known that I, ERNST LEONHARDT', a subject of the King of Prussia, and resident of Barwinkel, near Neuhardenberg, inthe Province of Brandenburg, Germany, have invented a new Process of Making a Disthen distilled-conveniently by steam heating so as to obtain a practical odorless cresol till 7 5 per cent. of the liquid has been distilled over. Preferably, the distillate is mixed With copper acetate in the proportion of 90% cresol to 10% concentrated solution 'of copper acetate, but I do not desire to l1m1t myself to these proportions. The distillate obtained in this Way is almost odorless and consists chiefly of cresol with only a small content of phenol. This distillate is now treated in the warm state with an acld aluminium sulfate e. g.

Which is easily and completely dissolved. The excess acid is neutralized in its action by adding alumina-iron oxid '(Al O Fe O In this Way a concentrated disinfectant is obtained which is practically odorless and forms a very permament emulsion with water. In this diluted formof course there is scarcely a trace of smell.

Specification of Letters Patent. Patented Aug. 29, 1911. Application filed November 6, 1909.

Serial No. 526,606.

In practice it has been found convenient to employ an aqueous solution containing about to 1% of the disinfectant.

The material obtained has considerable powers as a germ killer and in addition to being almost odorless it hasithe power of deodorizing materials Which smell obj ectionably. Similarly su'lfureted hydrogen, ammonium sulfate, ammonia, amine and acids (such as butyric acid) may be decomposed by the material'according to the present invent-ion, so that the places to be disinfected may be simultaneously rendered odorless. The new material may, on account of the qualities mentioned, be also used for preserving .dungs and manures.

I claim 1. The method of preparing a disinfectant and purifying material consisting in distilling off a mixture of cresol containing distillate With an acid aluminium sulfate,

and neutralizing the excess acid by adding alumina-iron oxid.

In Witness Whereof I have hereunto set my hand in the presence of two Witnesses.

ERNST LEONHARDT. Witnesses:

HENRY HAsPER, WOLDEMAR I-IAUPT. 

